172 puesident's address. 



1715. Savevy died in London. 



1717. December 29. Galley (or Cawley) died whilst erecting 



an engine at or near Ansthorpe, Yorkshire. This is 

 from the burial register of Whitkirk. See Farey's 

 Steam Engine, p. 155. 



1718. Beighton invented the "hand gear." The steel-yard 



safety-valve was introduced, also the snifting valve and 

 the shortened eduction-pipe, with its non-return valve. 

 All the essential features of the perfected engine were 

 now present. 



1720. Newcomen went into Cornwall and erected an engine at 



Wheal Fortune. Another engine on the same model 

 was erected at Pool Mine in 1746. 



1721. An advertisement in the Daily Courant, 24 July, 1721, 



beginning " Whereas an engine to raise water by Fire, 

 commonly called Savery's engine," and inviting atten- 

 tion to a new form of engine. The above was printed in 

 Notes and Queries, 27 January, 1900 (9 ser. vol. 64). 

 See also Notes and Queries, 17 February, 1900 for a 

 communication from J. E. Hodgkin. 



1725. Joseph Hornblower erected an engine at Wheal Rose, near 

 Redruth, a second engine was erected at Wheal Busy, 

 and a third at Polgooth, April 8. Steam engine at work 

 at Tipton, Staifordshire. (On this day the son of John 

 Hilditch "Manager of ye Fire engine at Tipton " was 

 baptised in the parish church of Bilston. The Engineer, 

 11 November, 1898). 



1729. Newcomen died in London. 



1733. July 24. Savery's patent expired, having been in existence 



for 35 years. 

 1758. Many engines at work in Cornwall, one at Herland having 



a 70-in. cylinder. (Wm. Emerson describes in detail 



the Newcomen engine as then used). 

 1767. Smeaton first turned his attention to the atmospheric 



engine. 

 1769. Smeaton computed the duty of fifteen engines in the 



Newcastle-on-Tyne district, and found the average duty 



